Sony HCD-GRX70, Руководство по обслуживанию

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PANEL BOARD IC601 TMP88CS76F-6004 (FLUORESCENT INDICATOR TUBE DRIVER, KEY CONTROL)
Pin No. Pin Name I/O Description
1 SIRCS I Remote control signal input from the remote control receiver (IC602)
2 JOG-A I Jog dial pulse input from the rotary encoder (S601 JOG) (A phase input)
3 LED SCK O Serial data transfer clock signal output to the LED driver (IC604)
4 LED LAT O Serial data latch pulse signal output to the LED driver (IC604)
5 LED DATA O Serial data output to the LED driver (IC604)
6 PAD LAT O Not used (open)
7 L SEL O LED selection signal output terminal
8 JOG-B I Jog dial pulse input from the rotary encoder (S601 JOG) (B phase input)
9 VOL-A I Jog dial pulse input from the rotary encoder (S602 VOLUME) (A phase input)
10 VOL-B I Jog dial pulse input from the rotary encoder (S602 VOLUME) (B phase input)
11 KEY0 I
Key input terminal (A/D input) (S625 to S630)
REC PAUSE/START, HI-DUB, CD SYNC, LOOP, DISPLAY, SPECTRUM ANALYZER keys
input
12 KEY1 I
Key input terminal (A/D input) (S611 to S624)
SYNC BASS, SYNC EQ, KARAOKE PON/MPX, NON-STOP, SURROUND, DBFB,
ENTER/NEXT, +
)
, –
0
, GROOVE, FLASH, REPEAT STEREO/MONO, PLAY MODE
DOLBY NR, EDIT DIRECTION TUNER MEMORY keys input
13 KEY2 I
Key input terminal (A/D input) (S638 to S642 and S751 to S757)
TIMER SELECT, P FILE MEMORY, GEQ CONTROL, FILE SELECT, EFFECT, I/
u
,
(STANDBY) POWER SAVE DEMO, DISC 1/2/3, DISC SKIP EX-CHANGE,
§
keys input
14 KEY3 I
Key input terminal (A/D input) (S643 to S651)
TUNER/BAND,
( P
CD,
p
,
(
TAPE B,
9
TAPE B,
(
TAPE A,
9
TAPE A,
FUNCTION, CLOCK/TIMER SET keys input
15 GRAD L2 O
Not used (open)
16
S LOW FREQ
(BPF0)
I
Spectrum analyzer drive (super low frequency) signal input from the spectrum analyzer band-
pass filter (IC603) (for 40 Hz)
17 BPF1 I
Spectrum analyzer drive (low frequency) signal input from the spectrum analyzer band-pass filter
(IC603) (for 100 Hz)
18 BPF2 I
Spectrum analyzer drive (low and middle frequency) signal input from the spectrum analyzer
band-pass filter (IC603) (for 400 Hz)
19 BPF3 I
Spectrum analyzer drive (middle and high frequency) signal input from the spectrum analyzer
band-pass filter (IC603) (for 2 kHz)
20 BPF4 I
Spectrum analyzer drive (high frequency) signal input from the spectrum analyzer band-pass filter
(IC603) (for 6 kHz)
21
ALL BAND
(L+R)
I
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603)
(for VACS, non-stop signal)
22 WAKE UP O Wakeup control signal output to the system controller (IC501) “H” active
23 VSS — Ground terminal
24 VASS — Ground terminal (for A/D conversion)
25 VAREF I Reference voltage (+5V) input terminal (for A/D conversion)
26 VDD — Power supply terminal (+5V)
27 to 32 G18 to G13 O Grid drive signal output to the fluorescent indicator tube (FL601)
33 to 40 G12 to G5 O Grid drive signal output to the fluorescent indicator tube (FL601)
41 VDD — Power supply terminal (+5V)
42 to 44 G4 to G2 O Grid drive signal output to the fluorescent indicator tube (FL601)
45 G1 O Grid drive signal output to the fluorescent indicator tube (FL601)
46 to 67 S1 to S22 O Segment drive signal output to the fluorescent indicator tube (FL601)
68 VKK — Power supply terminal (–30V) (for fluorescent indicator tube drive)